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Lyrx [107]
3 years ago
12

3-14 plzzz except #13 20 points!

Mathematics
1 answer:
Marianna [84]3 years ago
4 0
#3: 15

#4: 13.2

#5: 5.44 (curious as to how you guessed 7)

#6: 7

#7: 7.3

#8: 15

#9: You'd round 0.9 to 1 and 3.78 to 4. 4/1 = 4

#10: Round 2.5 to 3. 36/3 = 12

#11: If they want you to round 0.25 down to 0, then 7/0 is undefined. 

#12: 9.5 rounds to 10 142.5 rounds to 143. 143/10 = 14.3

#14: 24.8 cm divided by 175 = approximately 0.1417 cm per year. Round that up to approximately 0.14 per year. 


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Natasha_Volkova [10]

Answer:

f(n) =4 + f(n-1) \\for\ n>2

Step-by-step explanation:

Given

f(1)=2\\ f(2)= 6\\ f(3)= 10\\ f(4)= 14\\ f(5)= 18

Required

Determine the formula

First, we need to solve common difference (d)

d = f(n) - f(n-1)

Take n as 2

d = f(2) - f(2-1)

d = 6 - 2

d = 4

Represent each function as a sum of the previous

f(1) = 2

f(2) = 2 + 4 = f(1) + 4

f(3) = 6 + 4 = f(2) + 4

f(4) = 10 + 4 = f(3) + 4

f(5) = 14 + 4 = f(4) + 4

Represent the function as f(n)

f(n) =f(n-1) + 4

Reorder

f(n) =4 + f(n-1) \\for\ n>2

7 0
3 years ago
Please help<br>find x. ​
Kay [80]

Answer:

x=229°

Step-by-step explanation:

The given figure is a quadrilateral or a figure with (4) sides. The sum of angles in a quadrilateral is (360) degrees. One can apply this here by stating the following:

25 + x + 23 + 83 = 360

Simplify,

25 + x + 23 + 83 = 360

131+x=360

Inverse operations,

131+x=360

x=229

4 0
3 years ago
The sum of six consecutive integers is 675. What is the FIRST of the four integers?
DaniilM [7]
Yes that great hope that helped :)
4 0
3 years ago
The current value of a baseball card is 60 times its original value v
jeka94
60v = $15

60v/60 = $15/60

v = 0.25

The original value of the baseball card is $0.25
5 0
4 years ago
David is building a rectangular fence around his garden. The short side is 15 meters and the long side is double that amount. Wh
Elenna [48]

Solution:

<u>Note that:</u>

  • Side₁ (Short side) = 15 meters
  • Side₂ (Longer side) = 2(15) = 30 meters
  • Perimeter = 2L + 2B

<u>Substituting the values into the expression:</u>

  • 2L + 2B
  • => 2(15) + 2(30)
  • => 30 + 60
  • => 90 m

The perimeter of the garden fence is 90 meters.

8 0
3 years ago
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